Kristy rolled 2 number cubes, each labeled 1-6. She rolled the cube 400 times, added the two nurnbers
showing, and recorded the results. About how many
times should Kristy expect to roll a sum of 8?
A) 50 B) 56 C) 65 D) 70
Please help me

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

If f(x)=-3x+2 and g(x)=-7x-2, which point represents f(x)=g(x)?

Situation: an archaelogist in turkey discovers a spear head that contains 54% of its original amount of c-14. n = noekt no = inital amount of c-14 (at time t = 0) n = amount of c-14 at time t k = 0.0001 t = time, in years find the age of the spear head to the nearest year